56147761 has 4 divisors (see below), whose sum is σ = 58588992. Its totient is φ = 53706532.

The previous prime is 56147747. The next prime is 56147783. The reversal of 56147761 is 16774165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56147761 - 2¹³ = 56139569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56147761.

It is not an unprimeable number, because it can be changed into a prime (56147701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220581 + ... + 1220626.

It is an arithmetic number, because the mean of its divisors is an integer number (14647248).

Almost surely, 2^56147761 is an apocalyptic number.

It is an amenable number.

56147761 is a deficient number, since it is larger than the sum of its proper divisors (2441231).

56147761 is a wasteful number, since it uses less digits than its factorization.

56147761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441230.

The product of its digits is 35280, while the sum is 37.

The square root of 56147761 is about 7493.1809667190. The cubic root of 56147761 is about 382.9224370109.

The spelling of 56147761 in words is "fifty-six million, one hundred forty-seven thousand, seven hundred sixty-one".